Wheel and axle for roller-skates.



APPLIOATION FILED JULY 19, 1910.

Patented July 23, 1912.

To all whom it may concern THOMAS WILLIAM ROBINSON, STREATHAM,. LONDON,ENGLAND.

WHEEL AND AXLE FOR ROLLER-SKATES.

Specification f Letters Patent.

Patented July 2 3, 1912.

Application led July 18, 1910. Serial No. 572,571.

Be it known that I, THOMAS ROBINSON, a subject of the King of England,residing at Winton Lodge, Leigham Court Road, Streatham, London,England, have invented certain new -and useful Improvements in Wheelsand Axles for Roller- Skates; and I do hereby declare the following tobe a full, clear, and exact description of the invention, such as willenable others skilled in the art to which it appertains to make and usethe same. A

This invention relates to improvements in rollers for roller skates andhas for'its object to so construct the rollers` as to enable the skaterto\round curves with gre-at facility.

For a full understanding `of the invention, reference-Will be had toth'e accompanying drawing illustrating a preferred embodiment thereof,and in which drawing' like characters of reference indicatecorresponding parts.

Figure 1 is a view in elevation-of a roller embodying my invention; Fig.2 is a vertical section taken on the line A-B, and, Fig. 3 is atransverse section taken on the line C--D.

Referring to the drawing, n. is a hub provided with a rectangularaperture p. This hub is pivoted to a square spindle fm, by means of apin g. It will be seen from Figs. l and 3 thatwhen the spindle m iscentral in the slot p of the hub n, there is a space between the spindleand the end surfaces of the slot, which allows for a certain angularmovement of the hub around the pin g with respect to the spindle m. 'Thehub n is provided with ball bearing surfaces. fr and s are ball bearingcups which are mounted on the hub n and between the`hub and the cups 1and .s are interposed balls t., Thecup 1" has a tubular extension v intowhich the cup s screwsso as to allow for the wear 'being taken up. Thesecups 1 and 's are locked with respect to one ,another by a 'small is atire of rubber or other suitable ma- WILLIAM- terial forming the runningsurface of the roller. .The tire fits over the tubular exten,- sion 'vand the outer surface of the cup 1, and is held and locked in positionagainst.- t-he dove-tailed`r edge c by a screw ring` 2 which screws uponthe outer end of the cxtension rv. The ring is locked in that positionby means of a screw pin 3.

4 represents tlat springs mounted so as yto press upon the two oppositesides of the square spindle m, and also bear against the end surfaces ofthe rectangular-slot 7), so that the tendency is to keep the squarespindle m normally vertical to the plane of the roller. The spindle mmay be. fixed in the fratrie of the skate so that the slot 71 of the hubn will be in a horizontal position as shown in Figs. 1 and 2 or avertical position as shown in Fig. 3, or in-any suitable angularposition, preferably sixty-tive Idegrees to the horizontal, which anglehas been found to answer Well in practice.

It is to be understood that slight changes in the det-ails'ofconstruction and combination and arrangement of the parts may beresorted to without sacrificing any of the advantages or departing fromthe principle of the invention.

Having fully, described myl invention 2.' In a skate wheel, thecombination of a roller rotatably mounted on a hub, the hub having anelongated slot, a spindle pivoted Ain' the slot, and springs interposedbetween the spindle'and the end surfaces of the slot for normallyholding the spindle centrally of said slot.

In testimony -,wlie1eof, I affix my signature, in presence of twowitn'sses.

THOMAS WILLIAM ROBINSON. Witnesses:

L. SIMMoNDs, V A. E. VIDAL.

